21 across 3 category boards · 2 without a live endpoint · 5 equivalent routes · 26 superseded · openai.com
ModelCap tracks 56 canonical OpenAI models as of 22 September 2026: 51 language models (17 with a public ModelCap Index position) and 5 image, audio or video models. Superseded versions and equivalent serving routes stay listed on this page, marked as such.
GPT-6 Astra is OpenAI's highest-ranked model as of 22 September 2026, at ModelCap Index position #3 with a score of 85.0, followed by GPT-5.6 Sol (#8). The table lists every ranked OpenAI model in Index order.
gpt-oss-20b at $0.13 per 1M output tokens ($0.03 per 1M input) as of 22 September 2026, the lowest listed price among OpenAI's 46 priced language models. Prices are the lowest current provider offer on the OpenRouter catalogue.
GPT-6 Astra, with a published context window of 1M tokens. Individual providers can serve less than the published maximum; each model page lists every endpoint's own limit.
5 of 56 tracked OpenAI models publish downloadable weights (open weights). ModelCap labels weight availability from repository metadata, not whether the training stack is open source; the licence class is shown beside each row.
GPT-6 Astra, first listed on 4 September 2026 and currently ModelCap Index #3. New OpenAI models appear here as soon as they pass automatic identity checks; the launches page tracks releases across every publisher.